Isotretinoin and recreational drugs

I’m being treated with Isotretinoin and I use multiple drugs as 2C-B, shrooms, weed, MXE, LSD, MDMA, 4-AcO-DMT, 6-APB, 4-FA which of these can I continue using? which ones should I avoid?

You should avoid any drug with potential to harm liver or modify hepatic blood tests. From your list, 2C-B, shrooms, weed, LSD and 4-AcO-DMT are probably safe, although, as far as I know there are not clinical trials to say that combination is “absolutely” safe